The Apex Theory are now known as "Mt. Helium".
- World Tour 2002 Pre-show Tracks
- Greatest Hits Tour 2007-2008 Pre-show Tracks
- World Peace Is None Of Your Business Tour 2014-2017 Pre-show Tracks
- Live In Concert 2023 Pre-show Tracks
Now known as Mt. Helium
Mt. Helium, formerly known as the Apex Theory, was an American rock band from Los Angeles, California, that was known for playing Mediterranean music mixed with progressive rock. The band has released three studio albums and three extended plays to date.